What are things you wish you knew when you started running?

I wish I'd started running sooner in life for sure. I think it's important to understand that slow and steady progress is more productive that getting into an injury cycle. That balance, being core strong and doing things other than just running helps.

Most of all, enjoy the spot in running that you are at. If you are just starting note how you are progressing, each milestone and pr is great. I've now been running for about 10 years, and have come a long way and only regret not starting sooner.